...Data Communications Introduction 1 Chapter Objectives: Defined data communications Introduced data communications needs Communications model Overview of networks Introduce Internet 2 Data, Data Communication Data is an entity that convey some meaning based on some mutually agreed upon rules/conventions between a sender and a receiver. Data Communication deals with the transmission of signals in a reliable and efficient manner 3 Data Communication Topics covered include: Signal Transmission Transmission Media Signal Encoding Interfacing Data link control Multiplexing 4 Computer Science and Data Communications Merger In 1970s and 1980s The computer communications revolution has produced several remarkable facts. There is no fundamental difference between data processing (computers) and data communications (transmission and switching equipment). There is no fundamental difference among data, voice, and video communications. The distinction among single processor computer, multiprocessor computer, local network, metropolitan network, and long-haul network has blurred. 5 Today’s Trends Three different forces have consistently driven the architecture and evolution of data communications and networking facilities: Traffic growth Development of new services Advances in technology 6 Communication Traffic Both local (within a building or building complex) and Long distance having transmission of Voice, video and data The increased emphasis on office automation, remote access...
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...IT204-1501B-01 Fundamentals Of Networking Phase 1 Individual Project 2/19/15 Modern day lives depend on the network or more specifically the internet. One could find this to be true if one had no access to the internet for one day. Networks at a base level can be explained as two or more electronic devices connected electronically sharing resources to one another. How we classify each network depends on the devices that are connected and the size of the network. Not all networks are created equally. One could categorize a network based on the size geographically. Is it a network that is in a room or small office building? Or do the systems attached to the network span the entire length of a state? Local Area Network or LAN is two or more electronic devices that are connected with in a limited area such as a room or building. The evolution of LANs has changed as technology has become more powerful. Early local area networks used coaxial cable as a means to communicate. Then in the 80s twisted pair starting with Cat3 cable made the splash in networks. Modern local area networks use Cat5 or Cat6 cable. The main thing to remember about Local Area Networks is this is Local and does not span over a far distance. Unlike LAN’s the Wide Area network does span over far distances. A good example of this is a company that has one building on 4th street and 20 miles away they have another building on 175th street. The company’s computers can share resources between buildings...
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... |Fundamentals of Networking | Copyright © 2013 by University of Phoenix. All rights reserved. Course Description This course provides a foundation in the basic telecommunications and networking technologies fundamental to the industry and to the broad field of telecommunications. Analog, digital, and radio frequency technologies are covered. Also covered in this course is an introduction to the OSI protocol model, network-switching systems, basics of wireless communications, and network security. Policies Faculty and students/learners will be held responsible for understanding and adhering to all policies contained within the following two documents: • University policies: You must be logged into the student website to view this document. • Instructor policies: This document is posted in the Course Materials forum. University policies are subject to change. Be sure to read the policies at the beginning of each class. Policies may be slightly different depending on the modality in which you attend class. If you have recently changed modalities, read the policies governing your current class modality. Course Materials Goleniewski, L. (2007). Telecommunications essentials. (2nd ed.) Boston, MA: Pearson. Panko, R. R., & Panko, J. L. (2011). Business data networks and...
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...Networks are hardware, software, and media that can be used to connect computers together allowing them to communicate, exchange information and share resources. Networks allow multiple users to access shared data and programs. There are five kinds of networks; LAN, WAN, CAN, MAN, and HAN. The two main types of networks are LAN and WAN. LAN stands for local area network, and WAN stands for wide area network. According to our text “A local area network (LAN) is a data communication system consisting of several devices such as computers and printers.” (The McGraw−Hill Companies, 2006). These devices are physically connected to one another by cables, wireless media, or infrared links. Any network within a building or several that are next to each other is a LAN. A WAN, also known as a wide area network is made up of two or more LAN’s geographically connected. An example of a WAN is when a company or business located in one place has its main offices in one place and other smaller parts of the company in other places all data is shared within the network. There are also three types of hybrid networks, CAN’s, MAN’s, and HAN’s. A CAN or campus area network is like a LAN but on a bigger scale and more diversified, allowing different campus offices and organizations to be linked. For example, at a college the registrar’s office is connected to the bursar’s office. MAN’s which are metropolitan area networks are a large type of network that connects many corporate LANs together. These...
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...the accessibility and the mobility of transportation planning. It occurs the planning for land development in the future and propose of road network in range of the district. For example in the local plan and state plan has derive the development for the road linkages and network toward making the land use based on the access way. In state and local plan land use planning has showed that normally the highly and high development access way may produce the main land use such as commercial, housing and administration especially in the middle of the city. Beside that in the area were has low development of traffic and access way may produce the micro land use such as industry and agriculture. The interrelationships between transportation and land use remain contentious despite extensive research. In particular, the influence of transportation system performance on land use development, although recognized as a lagged relationship. In addition, the land use been influenced because of certain problem that need to be overcome especially on traffic congestion. In response, communities are beginning to implement new approaches to transportation planning, such as better coordinating land use and transportation; increasing the availability of high quality transit service; creating redundancy, resiliency and connectivity within their road networks; and ensuring connectivity between pedestrian, bike, transit, and road facilities. In short, they are coupling a multi-modal approach to transportation...
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...Services (Voice, Data & Video Services). To contribute to the growth of a progressive company with quality products and services in the field of Telecommunications and Information Technology (ICT). SUMMARY OF SKILLS AND EXPERIENCE • Total 2 years and 4 months of experience with Advanced Diploma in Telecommunication Engineering and Cisco Certified Network Associate (CCNA). • 2 years and 8 months of experience as Network Engineer (Windows/Linux/Network). Possess the expertise in the following: Networking • Installations, Configurations and Troubleshooting of; • Wireless local Area network (WLAN) • Local Area Network (LAN) and Wide Area Network (WAN) Security • Wimax CPE (Alvarion) for SAFARICOM and ACCESSKENYA networks • Free Space Optic link (FSO) • Mikrotik CPE and router. • Nanostation 2.4Ghz and 5Ghz • Cisco routers and switches • Firewalls rules implementation • VoIP servers using IP PABX • Network IP planning • Software and hardware Windows •...
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...Foundations of Network Security Fundamentals of Network Security 2 Firewall Fundamentals 43 VPN Fundamentals 79 Network Security Threats and Issues 111 CHAPTer Fundamentals of Network Security 1 C OMPUTER NETWORK SECURITY is very complex. New threats from inside and outside networks appear constantly. Just as constantly, the security community is always developing new products and procedures to defend against threats of the past and unknowns of the future. As companies merge, people lose their jobs, new equipment comes on line, and business tasks change, people do not always do what we expect. Network security configurations that worked well yesterday, might not work quite as well tomorrow. In an ever-changing business climate, whom should you trust? Has your trust been violated? How would you even know? Who is attempting to harm your network this time? Because of these complex issues, you need to understand the essentials of network security. This chapter will introduce you to the basic elements of network security. Once you have a firm grasp of these fundamentals, you will be well equipped to put effective security measures into practice on your organization’s network. While this textbook focuses on general network security, including firewalls and virtual private networks (VPNs), many of the important basics of network security are introduced in this chapter. In Chapters 1–4, network security fundamentals, concepts...
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...University Network Telecommunication Professor Name October 21, 2013 LAN, MAN and WAN Computer networking is simply the communication between two or more computers that allow them to share information and hardware resources. This is really one of the most important contributions to the information age since personal computers were invented. The connection and communication of just two computers exchanging data and devices is the most fundamental of networking. The computer systems may communicate over a computer network and share their resources (Computer Network, 2009). A computer network can be wire and or wireless. When a network is wired, it uses cables to connect group of computers together to enable data communication. Wireless networks allow computers to communicate by using radio signals, so the computers aren't restricted by physical cables (Lowe, 2011). For example, it uses bluetooth, infrared rays and radio waves to send and receive signals over the network. Peer-to-peer (p2p) and client-server are the two computer networks in use today. In a p2p network, every computer has the same or equal capabilities and responsibilities. And with a client server it is nothing like peer-to-peer, some computers are the clients that request for resources and the servers make available the requested resources. There are many categories of computer networking, but the most common are local area network (LAN), metropolitan area network and wide area network (WAN). Local...
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...human resource management is a specific area for improvement in the Federation of the Future’s section outlining the Framework for Action. The Federation Human Resources (HR) Strategy was approved in April 2005 and actions to deliver it commenced in June of that year. The support of Department for International Development (DfID) during the years 2007 and 2008 has been fundamental in facilitating the achievement of major elements of the strategy. For the years 2009 and 2010, whilst the key themes of the human resources strategy remain in place, the focus of action shifts to building on achievements to date to cement them into the regular operating practices of the Federation. This is particularly the case in the seven zone offices that sit at the heart of the new operating model. In the context of the 2008 to 2010 strategy, and like the years 2007 and 2008, additional financial resources will be required to support key strategic interventions that will enable the HR department to implement and then operationalise major changes that can be absorbed into the regular operating budget of the department. The Federation can only move forward on HR initiatives by building consensus amongst leaders and the HR community on priorities and approaches. Through a target audience of HR professionals in the Secretariat and National Societies, the programme above will facilitate better recruitment, retention, motivation and management of international and local staff throughout the world and, in turn...
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...Integrative Network Design Project (INDP) This paper will explain the network fundamental characteristics and components of Kudler Fine Foods (KFF). Kudler Fine Foods is a small local upscale specialty food store specializing in import and domestic products located in the three locations within the San Diego metropolitan area. Diagrams will show the current network topology. Finally, a description the standards applicable to this INDP project will be provided. Network Fundamental Characteristics and Components A network is comprised of computer hardware, cabling, network devices, and computer software, which together allows computers to communicate with each other. The network characteristics are determined by the availability, cost, reliability, security, speed, scalability, and topology. In order to understand how each component communicates and operates it’s helpful to break it down into pieces and then analyze. The diagrams below provide details of the topology of Kudler Fine Foods. Current Network Topology The current network topology used at Kudler Fine Foods is the bus topology. The bandwidth which is the volume of data that can travel over the Ethernet cable is shared with a transmission speed of 100 Mbit/s. “The single cable is referred to as a trunk, backbone, or segment (Goleniewski, 2007).” University of Phoenix. (2013). University of Phoenix. (2013). University of Phoenix. (2013). Standards Components assigned to a specific architecture layer have...
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...Franklin Delarosa | Fundamentals of Information Systems Security | Project Part 1 | 4/3/2014 | ISP - Internet service provider Short for Internet Service Provider, it refers to a company that provides Internet services, including personal and business access to the Internet. For a monthly fee, the service provider usually provides a software package, username, password and access phone number. Equipped with a modem, you can then log on to the Internet and browse the World Wide Web and USENET, and send and receive e-mail. For broadband access you typically receive the broadband modem hardware or pay a monthly fee for this equipment that is added to your ISP account billing. In addition to serving individuals, ISPs also serve large companies, providing a direct connection from the company's networks to the Internet. ISPs themselves are connected to one another through Network Access Points (NAPs). ISPs may also be called IAPs (Internet Access Providers). WAN - wide area network A computer network that spans a relatively large geographical area. Typically, a WAN consists of two or more local-area networks (LANs). Computers connected to a wide-area network are often connected through public networks, such as the telephone system. They can also be connected through leased lines or satellites. The largest WAN in existence is the Internet. Reference Internet service provider. (2014, March 4). Wikipedia. Retrieved April 3, 2014, from http://en.wikipedia.org/wiki/Internet_service ...
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...Contact/Instructional hours: 56 (34 Theory Hours, 22 Lab Hours) Prerequisite(s) and/or Corequisite(s): Prerequisites: NT1110 Computer Structure and Logic or equivalent Course Description: This course serves as a foundation for the study of computer networking technologies. Concepts in data communications, such as signaling, coding and decoding, multiplexing, circuit switching and packet switching, OSI and TCP/IP models, LAN/WAN protocols, network devices and their functions, topologies and capabilities are discussed. Industry standards and the development of networking technologies are surveyed in conjunction with a basic awareness of software and hardware components used in typical networking and internetworking environments Introduction to Networking Syllabus Where Does This Course Belong? This course is required for the associate program in Network System Administration and the associate program in Electrical Engineering Technology. The following diagrams demonstrate how this course fits in each program. Associate Program in Network Systems Administration NT2799 NSA Capstone Project NT2580 Introduction to Information Security NT2670 Email and Web Services NT2640 IP Networking PT2520 Database Concepts NT1330 Client-Server Networking II NT1230 Client-Server Networking I NT1430 Linux Networking PT1420 Introduction to Programming NT1110 Computer Structure and Logic NT1210 Introduction to Networking NT1310 Physical Networking CO2520...
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...Contact/Instructional hours: 56 (34 Theory Hours, 22 Lab Hours) Prerequisite(s) and/or Corequisite(s): Prerequisites: NT1110 Computer Structure and Logic or equivalent Course Description: This course serves as a foundation for the study of computer networking technologies. Concepts in data communications, such as signaling, coding and decoding, multiplexing, circuit switching and packet switching, OSI and TCP/IP models, LAN/WAN protocols, network devices and their functions, topologies and capabilities are discussed. Industry standards and the development of networking technologies are surveyed in conjunction with a basic awareness of software and hardware components used in typical networking and internetworking environments Introduction to Networking Syllabus Where Does This Course Belong? This course is required for the associate program in Network System Administration and the associate program in Electrical Engineering Technology. The following diagrams demonstrate how this course fits in each program. Associate Program in Network Systems Administration NT2799 NSA Capstone Project NT2580 Introduction to Information Security NT2670 Email and Web Services NT2640 IP Networking PT2520 Database Concepts NT1330 Client-Server Networking II NT1230 Client-Server Networking I NT1430 Linux Networking PT1420 Introduction to Programming NT1110 Computer Structure and Logic NT1210 Introduction to Networking NT1310 Physical Networking CO2520...
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...| Computer Networks | By:Yaafiz Mohamed (S12425216)Zimna Ahmed (S12465436)Shahuma Abdulla (S12465351)Najudha Adam (S12465351)Sama Ali (S12465333) | | | | | Table of Contents Introduction 3 Computer and Networking. 3 Characteristics of Computer Networks. 3 Types of Computer Networks. 4 PAN (Personal Area Network) 4 LAN (Local Area Network) 5 MAN (Metropolitan Area Network) 5 WAN (Wide Area Network) 5 CAN (Campus Area Network) 5 SAN (Storage Area Network) 5 Why do we network our computers? 6 Peer-to-peer networking. 6 Computer Network Technologies 7 Conclusion: 8 Reference: 9 Introduction The purpose of the report is to survey and monitor the current state of computer network and the types of computer networks. This report is written by examining a range of recent published articles, magazine articles, and internet sites on the topic of computer networks used which are used commonly. The report is mainly about the types of computer network and their functions. Computer and Networking. A computer is a programmable machine, which is designed to sequentially and arithmetically carry out a sequence of logical operations. The particular sequence of operation allowing to solve more than one kind of problem. It responds to a specific set of instructions in a well defined manner. It can execute a pre-recorded list of instructions. Main components of computers are input, output and process. (Thakur) According to (Mitchell, What is (Wireless...
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...Network protocols In this essay I will explain the functionalities of different types of protocols, what are they? why are they used? And how networks benefit from them, also on how layers work in the OSI model. I will also explain on how layers work with protocols and how they function together. OSI Model/layers OSI model has been created to understand on how one computer can get to one network,connected which is connected by using cables or wirelessly to another computer. OSI model has 7 represented layers on the model, the first layer which is the application layer which represents - application as mail,web and file transfers which can also work with telnet. Layer 6 is the presentation layer, where encryption,decryption and...
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